BE494881A - - Google Patents

Info

Publication number
BE494881A
BE494881A BE494881DA BE494881A BE 494881 A BE494881 A BE 494881A BE 494881D A BE494881D A BE 494881DA BE 494881 A BE494881 A BE 494881A
Authority
BE
Belgium
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE494881A publication Critical patent/BE494881A/xx

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/012—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using recorded signals, e.g. speech

Landscapes

  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
BE494881D 1949-04-02 BE494881A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT291958X 1949-04-02

Publications (1)

Publication Number Publication Date
BE494881A true BE494881A (fr)

Family

ID=11226533

Family Applications (1)

Application Number Title Priority Date Filing Date
BE494881D BE494881A (fr) 1949-04-02

Country Status (4)

Country Link
BE (1) BE494881A (fr)
CH (1) CH291958A (fr)
DE (1) DE830466C (fr)
FR (1) FR1031567A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962587C (de) * 1952-11-15 1957-04-25 Wilhelm Kengelbach Feuer-, Unfall- und Sicherheitsmeldeanlage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234874A (en) * 1978-11-08 1980-11-18 Inventional/Security Development Corp. Alarm system and method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962587C (de) * 1952-11-15 1957-04-25 Wilhelm Kengelbach Feuer-, Unfall- und Sicherheitsmeldeanlage

Also Published As

Publication number Publication date
DE830466C (de) 1952-02-04
CH291958A (fr) 1953-07-15
FR1031567A (fr) 1953-06-24

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